<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		*{
			margin: 0;
			padding: 0;
		}
		#nav {
		    color: #222222;
		    height: 0.86rem;
		    line-height: 0.86rem;
		    display: flex;
		    text-align: center;
		    padding: 0 0.25rem;
		    background-color: red;
		    height: 50px;
		}
		#nav>div{

			background-color: blue;
		    float: left;
		    flex: 1;
		    line-height: 50px;
		}
	</style>
</head>
<body>
	<div id="nav">
		<div>首页</div>
		<div>财富</div>
		<div>发现</div>
		<div>我的</div>
	</div>
</body>
</html>